. >>> the war in afghanistan continues to be a source of debate from the white house toe the republican lawmakers. during a trip to afghanistan to meet with troops on the 4th of july, john mccain and lindsey graham questioned the decision to move troops from the war stone. >> some supporters are now on the possession. >> reporter: key senators are raising doubts. >> it's an unnecessary risk. >> i worry it may have undercut the momentum. i hope i'm wrong. >> reporter: john mccain and lindsey graham said it was risky saying it could put the american troops in jeopardy. the plan calls for pulling out 10,000 troops by the end of this year with another 23,000 gone by next summer. >> i hope it will work out. it is certainly depriving us of the necessary troops we need for the second fighting season. >> reporter: the obama administration is standing by the plan saying success is on the ground, especially with the stilling of osama bin laden. >> al qaeda is under more pressure than at any time since 9/11. >> reporter: still this raid shows insurgents will not go quietly. >> if we don't succeed